202100011002 has 24 divisors (see below), whose sum is σ = 438545838900. Its totient is φ = 67264750080.

The previous prime is 202100010991. The next prime is 202100011063. The reversal of 202100011002 is 200110001202.

It can be written as a sum of positive squares in 2 ways, for example, as 183698817201 + 18401193801 = 428601^2 + 135651^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8481127 + ... + 8504922.

Almost surely, 2^202100011002 is an apocalyptic number.

202100011002 is an abundant number, since it is smaller than the sum of its proper divisors (236445827898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202100011002 is a wasteful number, since it uses less digits than its factorization.

202100011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16986718 (or 16986715 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 202100011002 its reverse (200110001202), we get a palindrome (402210012204).

The spelling of 202100011002 in words is "two hundred two billion, one hundred million, eleven thousand, two".